package zhoukao;

public class ConsDemo {
    public static void main(String[] args) {
        Student zs=new Student();
        Student ls=new Student("李四",365);
        Student SH=new Student("竖行",25,"jsd2020","010");
        zs.sayHi();
        ls.sayHi();
        SH.sayHi();
    }
}
